图片添加水印
文字或图片水印，可调透明度与平铺。
关于「图片添加水印」
它属于「图片处理」分类：基于 Canvas 的本地图片编辑，原图不会离开你的设备。
- 为图片添加文字水印，支持平铺、居中、四角等位置，可调透明度、字号、颜色与旋转角度。
- 平铺模式适合防盗用；角落模式更含蓄。
- 处理在本地完成，图片不会上传。
完全免费、无需注册；所有处理都在浏览器本地完成，文件不会上传到任何服务器。
相关关键词：图片添加水印、图片处理、水印、watermark、在线工具、免费
如何使用「图片添加水印」
- 打开工具：打开「图片添加水印」页面，无需注册、无需安装任何软件。
- 准备输入：准备好要处理的内容或文件：文本可直接粘贴，文件可拖入页面（本工具属于「图片处理」）。
- 填入内容：把内容粘贴进输入框，或把文件拖入页面；也可以点击「示例」先填入样例数据试一下。
- 设置选项并处理：按需调整页面上的选项，然后点击处理 / 转换 / 生成按钮。
- 获取结果：处理完全在浏览器本地完成，结果可直接复制或下载，文件不会上传到任何服务器。
常见问题
- 水印被图片盖住了？
- drawImage 之后绘制水印，水印一定在图层最上方，不会被盖住。
- 能加图片（Logo）水印吗？
- 本工具仅支持文字水印；图片类水印可在批量水印工具中扩展，或后续版本补充。
Image Watermark (English)
Text or image watermark with opacity and tiling.
Belongs to “Image Tools”: Canvas-based local image editing; your originals never leave the device.
- Adds a text watermark with positions like tile/center/corners; adjust opacity, size, color and angle.
- Tile mode deters theft; corner mode is subtler.
- Processing is local; images are never uploaded.
Free, no sign-up; everything runs locally in your browser and files are never uploaded.
Keywords: Image Watermark, Image Tools, watermark, online tool, free
How to use it
- Open the tool：Open the “Image Watermark” page — no sign-up and nothing to install.
- Prepare the input：Prepare the content or file to process: paste text or drop a file onto the page (this tool belongs to “Image Tools”).
- Provide the input：Paste your content into the input box or drop a file onto the page; you can also click “Sample” to try example data first.
- Adjust options and run：Adjust the options if needed, then click the process / convert / generate button.
- Get the result：Everything runs locally in your browser; copy or download the result — your files are never uploaded.
FAQ
- Is the watermark hidden by the image?
- The watermark is drawn after drawImage, so it stays on top and is never covered.
- Can I add an image (logo) watermark?
- This tool supports text watermarks only; image watermarks may come in a later version.
More tools in Image Tools
- Image Compressor — Adjust quality and size, batch compress and compare.
- Image Cropper — Drag a box to crop, with common ratio lock.
- Image Resize — Scale a single image by pixels or percentage.
- Batch Image Resize — Resize multiple images uniformly and zip them.
- Batch Watermark — Apply a uniform watermark to many images at once.
- Image Color Picker — Pick any pixel color and copy its value.
- Replace Image Color — Replace a color with a new one within tolerance.
- Image Grid Cutter — Slice into tiles and pack into a ZIP.
- Photo Frame Maker — Add borders, rounded corners and shadow to photos.
- ID Photo Resizer — Crop and recolor standard ID photos (1-inch, 2-inch).
- Perspective Correction — Pick four corners to straighten a tilted document.
- Image Filter & Tune — Live brightness/contrast/saturation/blur adjustment.
- Poster Generator — Auto-typeset copy into a downloadable share image.
- OCR Text Recognition — Recognize Chinese/English text in images locally.
- Favicon Generator — Generate multi-size site icons from one image and zip.